The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 1991
Filed:
Feb. 23, 1990
Robert B Coolidge, Spring, TX (US);
David M Nguyen, Houston, TX (US);
Dresser Industries, Inc., Dallas, TX (US);
Abstract
A cutting element retention system is shown for a diamond drill bit. The drill bit has a bit body with a bit face, the bit face having polycrystalline diamond cutting elements received thereon within mating recesses provided in the face. Each cutting element has a mounting body with a leading face and a trailing face and a diamond layer carried on the leading face. At least one fin with associated troughs are located behind the mounting body on the bit face or within the carrier substrate or cutting element itself and arranged transverse to the cutting element layer. The fins are separated by a trough which extends for substantially the entire cross-sectional depth of the diamond cutting face.